Layer-by-layer assembly of graphene and gold nanoparticles by vacuum filtration and spontaneous reduction of gold ions

Kong, Byung-Seon; Geng, Jianxin; Jung, Hee‐Tae

doi:10.1039/b821920f

Cited by 404 publications

(298 citation statements)

References 24 publications

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“…Recently, graphene/metal nanoparticle composites have aroused extensive interest and they are supposed to be useful in the fields of chemical sensors, energy storage, catalysis, and hydrogen storage [44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61]. The requirement to obtain graphene as individual sheets, and to maintain it in the reduced form, introduces complexity into the design of composite systems.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis and application of Ag-chemically converted graphene nanocomposite

et al. 2010

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An in situ chemical synthesis approach has been employed to prepare an Ag-chemically converted graphene (CCG) nanocomposite. The reduction of graphene oxide sheets was accompanied by generation of Ag nanoparticles. The structure and composition of the nanocomposites were confirmed by means of transmission electron microscopy (TEM), atomic force microscopy (AFM) and X-ray diffraction. TEM and AFM results suggest a homogeneous distribution of Ag nanoparticles (5-10 nm in size) on CCG sheets. The intensities of the Raman signals of CCG in such nanocomposites are greatly increased by the attached silver nanoparticles, i.e., there is surface-enhanced Raman scattering activity. In addition, it was found that the antibacterial activity of free Ag nanoparticles is retained in the nanocomposites, which suggests they can be used as graphene-based biomaterials.

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Section: Introductionmentioning

confidence: 99%

Facile synthesis and application of Ag-chemically converted graphene nanocomposite

et al. 2010

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“…[2][3][4][5][6][7][8][9][10][11] Moreover, the integration of graphene with inorganic nanoparticles allows the properties of the nanocomposite to be engineered for specific applications, which is rapidly becoming a research trend as the nanocomposites are able to exhibit properties that are not found in the individual components. 6,[12][13][14][15][16][17][18] Nanocrystalline titanium dioxide (TiO 2 ) is a promising candidate for solar energy conversion applications such as photocatalysis, photochromism, and photovoltaics because of its unique optical and electrical properties. 19 It is widely used in applications such as hydrogen production, 20,21 gas sensors, 22,23 photocatalytic activities, 24,25 and dye-sensitized solar cells 26,27 because of its relative high efficiency and high stability.…”

Section: Introductionmentioning

confidence: 99%

Facile hydrothermal preparation of titanium dioxide decorated reduced graphene oxide nanocomposite

Chang

Huang

An’amt

et al. 2012

IJN

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A simple single-stage approach, based on the hydrothermal technique, has been introduced to synthesize reduced graphene oxide/titanium dioxide nanocomposites. The titanium dioxide nanoparticles are formed at the same time as the graphene oxide is reduced to graphene. The triethanolamine used in the process has two roles. It acts as a reducing agent for the graphene oxide as well as a capping agent, allowing the formation of titanium dioxide nanoparticles with a narrow size distribution (∼20 nm). Transmission electron micrographs show that the nanoparticles are uniformly distributed on the reduced graphene oxide nanosheet. Thermogravimetric analysis shows the nanocomposites have an enhanced thermal stability over the original components. The potential applications for this technology were demonstrated by the use of a reduced graphene oxide/titanium dioxide nanocomposite-modified glassy carbon electrode, which enhanced the electrochemical performance compared to a conventional glassy carbon electrode when interacting with mercury(II) ions in potassium chloride electrolyte.

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“…The oxygen functionalities on graphene immobilized with Ag + served as nucleation sites, and the growth of Ag nanoparticles occurred owe to the reduction of Ag + by the electrons supplied by conjugated domains of GO or rGO. Kong et al 64 proposed a similar mechanism for depositing Au nanoparticles on rGO. It was believed that the electron-induced reduction likely resulted from galvanic displacement and redox reaction due to relative potential difference between rGO and Au + .…”

Section: Functionalization Of Graphenementioning

confidence: 94%

Graphene functionalization and its application to polymer composite materials

Song

2013

Nanomaterials and Energy

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The progress of graphene research is growing very fast after the discovery of graphene in 2004. This is no doubt that commercialization of graphene will center in the future of graphene. The key challenge is the scale-up production of graphene or graphene-based materials. The hope has been lightened by several breakthrough results introduced above. However, the reproducibility is still concerned, as it is diffi cult to control the uniformity of individual graphene sheets from "top down" method. It also may be affected by the irregular edge of graphene and randomly dispersed functionalities on graphene sheets. The state-of-the-art techniques are also needed to achieve well-controlled microstructure of functionalized graphene and its derivatives. The article reviewed graphene functionalization and its application to polymer composite materials.

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Layer-by-layer assembly of graphene and gold nanoparticles by vacuum filtration and spontaneous reduction of gold ions

Cited by 404 publications

References 24 publications

Facile synthesis and application of Ag-chemically converted graphene nanocomposite

Facile synthesis and application of Ag-chemically converted graphene nanocomposite

Facile hydrothermal preparation of titanium dioxide decorated reduced graphene oxide nanocomposite

Graphene functionalization and its application to polymer composite materials

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